In a large sauce pan brown onion in the oil. Add spicy v-8 (half of the bottle to start), raw hamburger, Italian seasoning, and garlic. Mash ingredients together with a potato masher and cook stirring consistently on medium high heat until hamburger turns brown. Turn heat down to simmer and simmer for 45 minutes (or longer depending on your time). Add more v-8 depending on your desired consistency throughout the cooking process. I usually end up using nearly the entire bottle allowing my sauce to continue to simmer for an hour and a half.